package cn.tedu;

import java.sql.*;

public class Demo03 {
    public static void main(String[] args) throws SQLException {
        Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/empdb?characterEncoding=utf8&serverTimezone=Asia/Shanghai&useSSL=false",
                "root","root");

        Statement s = conn.createStatement();

        //执行插入数据sql
      //  s.executeUpdate("insert into emp(name) values('tom')");
        //s.executeUpdate("update emp set name='jerry' where name='tom'");
        //s.executeUpdate("delete from emp where name ='jerry' ");
        ResultSet rs =  s.executeQuery("select name ,sal from emp");
        while (rs.next()){
//            String name = rs.getString("name");
//            double sal = rs.getDouble("sal");
            String name = rs.getString(1);
            double sal = rs.getDouble(2);
            System.out.println(name+":"+sal);
        }
        System.out.println("执行完成！");
        conn.close();
    }
}
